Disadvantages of U-shaped buildings: the geomantic omen is not good, and the U-shape is a bit like a dead word. First of all, it means bad luck, and secondly, it is easy to make people lose balance between yin and yang. Especially in the two corners of the U-shape, the air flow is not smooth, bad air gathers here, and it is difficult to incorporate good air. This part of the residents are most affected.